In-beam creep of SiCf/SiC minicomposites under uniaxial tensile loading
In: ISSN: 0022-3115, 2020
Online
academicJournal
Zugriff:
International audience ; A newly developed clamping system for ceramic specimen is described in the present report. By using this system, the uniaxial tensile loading was first successfully applied up to fracture (950 MPa) on a SiCf/SiC minicomposite. A minicomposite is a 1D model composite. It consists of a SiC-based fiber tow embedded in a SiC matrix, which has a diameter of about 0.5 mm. Afterwards, the irradiation creep properties of SiCf/SiC minicomposites were studied. In-situ creep was performed in an in-beam creep device under uniaxial tensile stresses from 40 to 382 MPa during homogeneous helium irradiation. Homogenous irradiation was carried out by helium implantation with energies varying from 0 to 45 MeV. The displacement dose rate was 1.2x10-6 dpa/s. The average temperature was controlled to 700 and 900°C within ±15°C. Irradiation creep compliance of minicomposite was measured to be 3.07 x 10-5 and 5.43x10-5 dpa-1 MPa-1 at 700°C and 900°C, respectively.
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In-beam creep of SiCf/SiC minicomposites under uniaxial tensile loading
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Autor/in / Beteiligte Person: | Chen, Jiachao ; JACQUES, Sylvain ; Barthe, Marie-France ; Zhang, Chonghong ; Desgardin, Pierre ; Department of Nuclear Energy and Safety ; Paul Scherrer Institute (PSI) ; Laboratoire des Composites Thermostructuraux (LCTS) ; Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Snecma-SAFRAN group-Centre National de la Recherche Scientifique (CNRS) ; Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI) ; Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) ; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China (IMP) |
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Zeitschrift: | ISSN: 0022-3115, 2020 |
Veröffentlichung: | HAL CCSD ; Elsevier, 2020 |
Medientyp: | academicJournal |
DOI: | 10.1016/j.jnucmat.2020.152086 |
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